Application Study On Unit Commitment Optimization Modeling Based On Interruptible Load

Unit commitment is of great importance for daily dispatching, largely determine the active power output of the unit and start-stop state. The traditional unit combination has been difficult to meet the scheduling new problems. In the context of efforts to build the smart grid, demand response has become an important interactive resource. Based on the idea of the source and load interaction. application study on unit commitment optimization modeling based on interruptible load aiming to achieve economic, security, environmental protection and other benefits of multi optimal.First, new energy generation bring challenges to grid, especially because of wind power randomness, intermittence and characterized anti-peaking cause difficulties in dispatch. Since the construction of the smart grid, load-side resources has the hardware basis to participation system operation, which greatly enriched the schedulable resources, scheduling object should develop from the power side to the load side, in this context presents an source-load interactive scheduling ideas. Analysis of advantages and disadvantages and scope of different demand response interactive means, put forward the basic principles about load side involving system operation, enrich the interactive source charge interaction mechanism.Second, select interruptible load into the unit commitment, make a detailed analysis of key factors about interruptible load projects, including the user’s choice, advanced notification time, the interruption duration, the degree of compensation, modeling unit commitment optimization based on interruptible load.At last, a seven units is combined with some place actual load data, taking branch and bound method for mathematical optimization model simulation calculation examples, results show that the model is effective in improving the load shape, reduce system operating costs, reduced start and stop frequently inefficient small units, while users also gain, showing that considering the interruptible load unit combinatorial optimization scheduling model in favor of the power system reliable and economic operation.